Seeing a check engine light (CEL); is one of the most frustrating and confusing factors of owning a vehicle.
So, the check engine light (CEL), is just a light, with no information; telling you that there is a problem, somewhere in your vehicle.
However, as ambiguous as a check engine light (CEL) may be; your vehicle’s onboard diagnostic system, is essential to keeping the engine running efficiently.
So, flashing or blinking warning lights or a check engine light (CEL); should be addressed, as soon as possible. Because, warning lights on the dashboard are simply that, warnings. Consequently, if one of the lights stays on after you start your vehicle; you could potentially have a problem. Therefore, you should have your vehicle inspected, for needed repairs.
The lights may come on when, the onboard diagnostics (OBD) system; finds a problem in the electronic control system, that it can’t correct.
The (OBD) System Could Turn On:
- A check engine light (CEL)
- It could say “service engine soon”
- Possibly “check powertrain”
- The light may be nothing more, than a picture of an engine. Also, known as the International Check Engine Symbol; perhaps with the word “Check.”
In addition, to turning on the light; the computer stores a “trouble code” in its memory; that identifies the source of the problem; such as a malfunctioning sensor or a misfiring engine.
But, an electronic scan tool or a diagnostic computer, can read the code. As a result, this is usually standard equipment, in auto repair shops.
Furthermore, there are also a number of relatively inexpensive code readers; that are designed for the (DIY).
NOTE: Almost, all parts suppliers will read your code for free !
Some Common Reasons, The Check Engine Light (CEL) has turned on include:
- Loose or missing gas cap.
- Worn out, sparks plugs or wires.
- Electronic control module failure.
- Defective distributor or coil packs.
- Emissions control fault; such as the oxygen (O2)sensor.
- Fuel quality issue.
Finally, The Top Check Engine Light Car Repairs:
- Replacing oxygen (O2) sensor(s), Failing catalytic converter(s)
- Faulty ignition coil(s) and spark plugs
- Loose fuel cap
- Replacing thermostat
- Faulty ignition coil(s)
- Replacing mass air flow (MAF) sensor
- Bad spark plugs and spark plug wires
- Malfunctioning evaporative emissions (EVAP) purge control valve
- Replacing evaporative emissions (EVAP) purge solenoid
So, if one of the lights stays on, after you start your vehicle; you could potentially have a problem and should have your vehicle; inspected for needed repairs. Although it’s likely that the problem will be minor; it’s always best to get it checked. Before, it leads to a more disastrous accident. Because, this has been known to happen! So, make sure that any problems with your vehicle are checked; before embarking on any long drives.
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